tools · 10 utilities · no upload

ZIP to APK tools

Ten utilities for the stretch between "I have a ZIP" and "the APK works on every phone": map what fills the archive, flatten it, strip junk and secrets, fix case-sensitive links, compress images, bundle CDN files for offline use, configure a framework build, scan for permissions and WebView features, and inspect the finished APK. Everything runs in this tab.

Inspect the ZIP3 tools

See what is in the archive before it becomes an app: what takes the space, which links only work on your laptop, and which browser features the code depends on.

ZIP Size Treemap

See what fills your ZIP as a treemap, by file and by type, against the upload limits

/tools/zip-size-treemap

Filename Case Checker

Find links that only work on Windows and macOS — wrong letter case, missing files, root paths

/tools/filename-case-checker

WebView Feature Checker

Find the modern JS and CSS your site uses and the oldest Android WebView that can run it

/tools/webview-feature-checker

Repair & slim4 tools

Rebuild the ZIP so it converts cleanly: index.html at the root, no junk or secrets, lighter images and every CDN file bundled for offline use.

ZIP Root Flattener

Move index.html to the top of the ZIP — unwraps nested folders and build subfolders

/tools/zip-root-flattener

ZIP Junk Cleaner

Strip __MACOSX, .git, node_modules, source maps and secrets like .env before you build

/tools/zip-junk-cleaner

ZIP Image Compressor

Convert every PNG and JPEG in a ZIP to WebP, resize oversized ones and rewrite the links

/tools/zip-image-compressor

CDN Localizer

Download the CDN scripts, stylesheets and Google Fonts a page loads into the ZIP, so it runs offline

/tools/cdn-localizer

Configure the build2 tools

The settings that live outside your files: a framework's base path and router, and the Android permissions your code actually needs.

Framework Build Configurator

The exact base path, router and build settings for Vite, CRA, Angular, Next.js, Nuxt, SvelteKit, Flutter web and more

/tools/framework-build-configurator

Android Permission Scanner

Scan your site's code for camera, microphone, location and other device APIs — and what each needs in the APK

/tools/permission-scanner

Verify the APK1 tool

Open the finished APK and check the identity, version, permissions and signing certificate it will ship with.

APK Inspector

Open any APK: package name, version, SDK levels, permissions, signing schemes and certificate SHA-1/SHA-256

/tools/apk-inspector

Built for the ZIP, not the icon

Most converter sites offer the same handful of utilities — an icon resizer, a package-name generator, a splash maker. The builder already does those. The problems people actually hit with a ZIP happen before and after that: the archive is nested one folder too deep, a .git folder doubles its size, a stylesheet only loads on Wi-Fi, Logo.PNG works on Windows and 404s on Android, a React build points at /assets/. These tools are aimed squarely at that list — and at checking the APK that comes out.

None of them uploads anything. ZIPs are opened with JSZip, images are re-encoded on a canvas, APK manifests and certificates are parsed in JavaScript and hashed with Web Crypto. The only network requests any tool makes are the CDN downloads the CDN localizer exists to perform.

When the ZIP is ready, the builder turns it into a signed APK in a few minutes — and the docs explain every step in between.

Unzip it on a phone today

Upload the ZIP, name the app, pick an icon — and download a signed APK a few minutes later. Free builds, no watermark, no Android Studio.

Convert a ZIP — free site.zip → app-release.apk